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Biomedical subjects

B J Hansen

Publications and source records attributed to B J Hansen.

16 recordsLinked to original sources
PubMed1991

Transurethral resection of very large prostates. A retrospective study.

Twenty-one patients with benign prostatic hypertrophy (BPH), and a weight of transurethrally resected tissue exceeding 80 g (Group 1), were compared to a control group of 30 patients with a weight of resected tissue less than 80 g (Group 2) with regard to the peri- and postoperative course and the symptomatic and urodynamic results of surgery. All patients were followed 12 months postoperatively. In both groups more than 90% of the patients were satisfied with the results of the operation. However, the obstructive symptoms were better relieved than the irritative symptoms. The group who had large resections performed had a longer operating time and a greater perioperative blood loss than the group of minor resections. No differences were found with regard to other peri- or postoperative complications or subjective results. Transurethral resection is safe and efficient in treating BPH, also with very large prostates.

Aged↗
PubMed1991

Iatrogenic psoas abscess. Case report.

A case of iatrogenic pneumococcus psoas abscess is reported. The etiology was probably repeated local anaesthetic blockades in the lumbogluteal structures because of lumbago.

Abscess↗
PubMed1990

[Urinary retention in connection with postoperative pain treatment with epidural opioids].

The incidence of retention of urine in cases of postoperative epidural opioid analgesia varies from 15% to 90%. The extent to which this phenomenon depends upon the dosage employed has not been elucidated. The cause of postoperative retention of urine (PU) is probably a combination of the central and peripheral effect of the opiate involving altered autonomic activity. Increased sympathetic activity resulting from surgery may, similarly, be a pathogenetic factor. The current methods of treatment are prophylactic or symptomatic alpha-receptor blockade, naloxon in refractory doses or catheterization. Inhibition of per- and postoperatively increased sympathetic activity may possibly prevent PU. Carbacholine is not effective in the treatment of postoperative retention of urine. In animal experimental studies, kappa-receptor agonists have an analgesic effect without urodynamic side-effects but no clinical trials on man have hitherto been undertaken. When postoperative retention of urine occurs after epidural opioid treatment, clean intermittent catheterization or introduction of a thin suprapubic catheter are recommended.

Analgesia, Epidural↗
PubMed1989

[Erective dysfunction. Therapeutic consequences of a basal program of investigation].

During a period of nine months, 50 men aged 21-75 years were investigated on account of erective dysfunction by means of a simple outpatient programme of investigation. Five patients could be discharged after the primary contact with history-taking and information about further investigation and treatment. Forty-five patients were submitted to the programme of investigation which consisted of measurement of penile blood pressure, Doppler investigation of the penile arteries and the papaverine test. After this, ten patients (20%) could be referred for sexological advice while five were discharged as they did not desire further treatment. Sixteen patients (32%) were taught self injection. Out of the six patients (12%) in whom arterial insufficiency was demonstrated, penile prostheses were introduced operatively in four. Venous leakage from the corpus cavernosum was demonstrated in seven patients (14%) by means of cavernosometry and cavernosography. Venous ligature was performed in five with good effect in two. Thus, specific treatment could be offered to 35 men (70%) with satisfactory therapeutic results in 22 (44%).

Adult↗
PubMed1989

Calculi in female urethral diverticulum.

A case of two calculi found in the same urethral diverticulum in a 41-year-old woman with recurrent urinary tract infections is reported. The diagnostic procedures are discussed.

Adult↗
PubMed1989

Prostatic-type polyp in the bladder. A case report.

A case of prostatic-type polyp in the wall of the urinary bladder in a 73-year-old male is presented. The literature concerning ectopic prostatic tissue in the urinary tract is reviewed and it is concluded that the lesion is benign. However, recurrence has been reported in two cases. The etiology and pathogenesis is unknown.

Aged↗
PubMed1987

Program on Surgical Control of the Hyperlipidemias (POSCH): recruitment experience.

The Program on Surgical Control of the Hyperlipidemias (POSCH) is an investigator-initiated NHLBI grant-funded secondary coronary heart disease intervention trial using partial ileal bypass (PIB) for lipid reduction. Randomization started in September 1975 and ended in July 1983 with enrollment of 838 participants (421 surgery, 417 controls). The trial is scheduled to reveal the atherosclerosis impact of the lipid changes in 1990, at which time the average individual in the program will have been followed for 9.6 years. Initially, the magnitude of the recruitment task was greatly underestimated. An area containing 500,000 people was judged to be sufficient to randomize one patient per month. Actually, a population of 2.4-10.5 million, depending upon proximity to a clinic, was needed to achieve this goal. The study design was changed in 1981, due to recruitment costs, with reduction of the number of individuals to be randomized from 1000 to 838 and with extension of the duration of minimum follow-up from 5 to 7 years. Only with the development of a uniform model clinic concept, with specified levels of performance calculated from actual recruitment data, did accrual of patients into the trial become predictable and achievable. Some of the recruitment delays in POSCH were related to problems, in part generic to the existent grant funding mechanism and associated with decisions made by NHLBI and its Advisory Council. These delays were manifested by denial of reallocation of approved funds to initiate replacement clinics for discontinued ones, an 18-month delay in implementation of a protocol change in lipid criteria suggested by the Data Monitoring Committee, and a 2-year delay in the starting date for the fourth active clinic.

Adult↗